Rotary gas-engine.



CIHpHILDRETH algo; Q DAUBENSPBGK.'

Bo'rAnYie'Ag-igNom-B.-

ArrLIoATIHTILn'D Ju'. 3L, 19.1.4.

- Patented Oct. 20, 1914,

2 SRBBTSAHEBT 2.

STATES Parser ,n

annalisa. Himalaia im CLIFTON e. DAUBENspaea-j. aanstaan-anuncis. I

Romani? ens-ENGINE.

v Application meam'luary safran. .,sesriai no. 510,201..

To all'wlmm tmayconccm Be it known that We, CHARLES' H. HIL- nnn'rn and CLIFTON C. DAUBENSPECK, citizens ,of the United, States, residing at Oilfield, in the county of` Clark and State of Illinois, Vhaveinvented certainnew` and use- `ful Improvements in Rotary 'Gas-Engines,

of which the followingY isV a specification,

' reference heinghad tothe accompanying drawings. l

This invention relates to new` and useful improvements in internal combustion engines, and` more particularly to rotary gas engines, and the `primary object of the invention is tol provide lan engine wherein a maximum amount ot power ymay be derived with, the minimum fuel consumption,

A further-object ofthe invention resides in the provision ofA an engine having a gas compressing attachment connected" with the main, cylinder or housing of the device and still another object of the invention resides ink providing an improvedhinged Wall or valve connection between the compressing attachmentand the main cylinder.

Still another objectl of the invention rel sides in providing a device `which is simple and durable in. construction,- inexpensive to iiianufaetui'e, and one which will be efficient and useful in operation.

lith these and other objects in view,` the invention consists in the novel features of tlreii'nechanical startingmechanism for the engine. Fig. 5 is a transverse section through the hinged Wall arrangedy between 'tliefina'inhousing or casing of the, device Fie.

and the gasy compressing attachment. Gis afplanlvievv of the device shown 1n -lug.

f5 fandA Fig. 7 is a detail sectian ofthe operating mechanism for thegas inlet jvalve of the device.,.

In describing-our invention, We shall reparts throughout 4, to 'which are secured fer to theA drawings-in uafliziftshsimilar reference characters which- 1 indicatesy al cylinderlor posed of an annular tublarfmembe'r 2 com Swim@ naar fem Patenti-.doet ao, 1914; f

sis

designate 1 ject-responding the several views Vand in y stituting the main cylinder iproper, and

side covering plates 3, secured thereto. The

cylinder 2 is formed in sectionssecured one tothe other and xtendingthroughthe,axial centers of thesideplates 3,A is a central shaft manner, radial arms 5,y which. are enlarged to be considered theinner. periphery thereof,-is

provided. 'witha slot 7, and vthe heads -6 gon 1in any preferred' thetouter ends of provide.;heads 6.' :That :portion of the cylinder 2 whiclrmay the arms lar'e ealch provided with an -,exte1i sion stud or the likev Smvvhich4 projects through the slot fr', and are threaded or 'otherwise secured to pistony heads 9 mounted in the cylinder Q.ffhesepiston;l1eads are circular in `cross section and farcuatelin lolligitudinal; section to fit snugly in the cylinder 2 and, in'orderlto '.preye'nt the gases .which are adaptedl to be lreceivedin the 'cyllnder 2. from escaping through th'efslot v7,

an annular guard (strip lQisA proiv'idediand secured to the outer faces of thehea'd inembers. This guardfitssniigly against ,the inner portion of the cylinder 2. "The.pistons 9 mounted upon the'l shaft el torotate with the saule form a rotornwlithin the A main cylinder. l n y p Formed on orotherwise,secured to the periphery of one'section ofEthec'ylinder'Q, `is a. tubular extensionl 11,1constitutingfa plunger cylinder' the4 outer end` of Which is coveredby a removable'pl'a-te12and this cylinder 1l communicates; y'vi'ththe" interior of4 the tubular ineinberB/,ftlirOngh tl'ie'fm'ediumof an opening formed?inithel'atterlii.

Slidably mounted in thecylinder 11, is

a plunger head'13 and a ,plunger headiH, said heads secured togetherand l:held-in spaced relation, one to thei'othe'r, through the medium of a connecting-rod or arm The plunger head l'is'disposedjnearftheouter end of the cylinder 1l',fa1idinlet and outlet ports` 1G and 17, respectively;'are

provided adjacent the outer end of the said cylinder, at vdiametrically 'opposite points thereon, said ports being: coveredibysuitable =.i:`

check valves.' Leading tothe inlet portlis a coi'iduit 1 extending freni a carhureter (not shown while an additional conduit and in communication with chamber. 20`

iforined at the opposite end o the cylinder 11. rlliis chainloer is separated from the interiory of the cylinder 11' by a wall,l 21

formed therein, and a spring" held check y.valve provided-in the wall admits gases lo from the chamber lto bepaissed to the "inner end `of y the plunger cylinder, at predetermined times. f'

,lulcrunied.intermediate of its ends ,be-

, tween the walls of the chainloer'20 is an arin '2l-)noone end ot'wliicli is adapted to co-act with the ree'end of the. stein otthe valve 22. lElie, wall separating the chainbe`r` provided with an opening 123', through 20 which is slidaloly' mounted a l'vertical stein Contact with the opposite tree end of the ulcrunied arm The 'lower end of said stein 23a-.has a .roller 25h carried thereon projects slightly/through the opening 23 -to'a'point within the cylinder 11. rlfhns, on the inward' stroke of the .plunger heads .13 and 14, the inner end ot said plungerlhead 3o 14e willcontact with theroller 23h, forcing thesanie 'upwardly and correspondii iglyy v oscillating the arm 23 on its ulcgnni.A point; Such oscillation of the. arin v223 w'ill,=`oli viously,cause the valve .22.to bev opened thereby admitting gasn already under pressure, intothe inner end of the cylinder 1 1.

Yln order to prevent' the valve 22 vtroni heing retained in itsl open position `fory the full length of time that the plunger. head 23a is formed of a pairv oictelescopic inein'- 1ners 23and 23. it pin and slot connection is 'provided tln-n'ehetween, as clearly sliovii in vFig. 7, and each of the telescopicinenihers and 23e is 'provided with a collar 23f. A coill spring 23g encircles this ineinlier 23 between the collars .232 the tendency oi 4said spring will he tensio spring Eig. nis struct-ure 3, the upper end of which is .idaptedto 14V. isin contact with therollerl" the stein y head le contacts with the: roller to `forcetlie latter up t with 'the roller 23, `the torce ofthe explosion will close said valve j therefore permits the valve 2i.l to be properly actuated while thchead 1i is in contact with the roller` 23h.

'That portion of the cylinder 11, between the outer end wall 12 thereof and tlie'piston head `13, forms a compressor, kit being nnderstood that the gas is received therein trom'thepipe or conduit 18 and passes, under compression,I through the pipe or conduit 1 9A to the gaschainbend from where it' is admitted, at predetermined times, to the firingior combustion chamber 2 4. This chain- 4,ber is formedat the extreme inner end of the cylinderU, at a 'point immediately be ,y

low the wall 21 forined'between said cylinder and thechaniber 2O and :a spark plug 25 of ,any" preferred' character is operatively :troni the interior or the plungery cylinderis inountedfin the "wall ofthe chamber 24.

As stated, the cylinder 11 communicates with the interior ot" the cylinder 2 and, in

order to permit the force of the 'explosion of the chamber tobe directed 'in but one way, throughA the cylinder 2, a 'valve 26 is prol vitled'which is hinged, at the point of inter-- which, inthe normal position of ythe stein,

section 'between one wallet the cylinder 11 yand `the cylinder 2. This valve 26 is of such forni both a part 4ot the cylinder design as to 11 and a'- art of' tliecylinder- 2,` the exact fforination of which is clearly disclosed in Fig of the drawings. This valve 26 is adapted, througligravity, 'to he disposed t across the path'of 'the pistons 9 inthe ineinlier 2 rand in order to'prevent the pistons from striking this, valve as the. former are rotated in the cylinder 2, I provide a means k,for retaining the valve 26 iiorinalhTl in a raised position'.

To this end, an extension arm 26'is` formed at the hinged end of the valve V.26 'and projects through a slot or opening'inftlie adjacent portion of the cylinder f2. Acoih spring 2Ga is engaged with the @.trecend of :ii-in 26 and is adjust-ably se cured, as sliownat 261 tothe outer face of' the wall of `the cylin'dei- 2Ly The valve. 26 vill, therefore, ,be yieldingly retained in -its rail/sed position, andthus completes the `formation of the cylinder 2 'for the'clear rotation' oi' the pistons '9 therein.

A projection Spi, however, is provided on the inner end of the plungerdiead 14 which, upon the instrolie of the latter is adapted to contact y .with the inner hinged end of the valve 2G to force the latter to itscloscd position, as shown in Fig. 1. The ex'plosion takes place in the chamber `241, when 'the valve QG ris iii its lowered position, and the force of the explosion will he directed against the plunger -head and onewall of an' adjacent piston 9,. asqwell as against the valve 2G, which frins a base or licoring for the chamber 2l. The force of thev explosion will, of course, direct the plunger 14 outwardlyin the cylinder 11 and will force the pistons 9 around the cylinder 2 in the direction ot the arrow s liown in Fig. 1.

As soon as the plunger iis vheeuilljijsdirected'outwardly, the valve 26 willb "raised-under tension of the spring 96%, 1h@ assessed which-are "inJ--thecylmder 2 will be carried partially a nundj the 'same and exhausted #27 which'is-suitably mounte L,nder`sytolnl that as the one piston e creed 1n the direction of the arrow mfEis will befrevolvedfinthe main casing or hous- '19 n elle-have provided `:for the actuation of the vpiston vand plunger heads 13 and 14 Isimultaneously with the`rotation of the rotor and,

tothis 'end,"an enlarged gear 2'9.is mounted on .theshaft 4, .justbeyond the casing or housing `Arranged in c onnectionwith the A. gear 29, is, ay pinionBO which hasanleccentric 31 qpl'atively connected thereto and a longitudinal rod orishaft 32 operatively connects at vits one .end with this eccentric 31. The` -opposite.end ofthis rod or arm 32 has a transversely extending connection 33 suitably engaged therewith, which. projects through a slot "34. in the side of the extension '11. This projection 33 connects with the arm 15 and, from this descriptio'm'it will be seenjthat the heads 13 and 14; will be reciprocated inthe-,cylinder l1, as the rotor revolves in the main' cylinder l. `We have also provided 4a means for starting .this engine and, in carrying out this idea, a ratchet 35 is mounted on the shaft 4. L oosely mounted on this shaft 4, is an arm 36 which carries a pawl 37, the latter being normally' held .in engagement' with the teeth of the ratchet by means of a coil spring 38. The outer end of thearm 38 has a link 39 pivotally engaged therewith, the opposite end of said link being pivoted intermediate of the ends of anarm 40. This latter arm is fulcrumed at its one end to an object and the opposite end has pivoted connection with an additional link 41. This link is in turn, pivotally connected intermediate of the ends of an actuating lever 42 which Ais fulcrumcd at one end to a fixed support. l It will be seen, from to admit gas from thecarburetor to theA outer end of the cylinder 11 which, as heretofore stated, forms a compressor. Upon the will be com products of. combustion o--int on the cylinder and-itl l jheujfther piston'heaCs in connec` ltiontl'iere' .ithand '1n -fact thecomplete rotor ressed againstv the outer wall of the cylin i its open position, .will heV directed through the conduit 19 to the gas chamber 20. It will be understood from lthe foregoing descrlption of the device that as the rotor revolves," the plunger heads 13 and 1-1 will be reciprocatcd in the cylinder 11 `and it is also understoodl that the valve 26 is adapted to bel normally disposed to its raisedposition, as shown in Fig. 1, and vforced to its lowered position upon' the instroke of the plunger head 14. rIhe return of the valve26 to its .lowered or closed position, completes the formation of the lower portion of the cyl inder 11, so that the plunger head 1l may continue-on its instroke and, as it continues 'on its instrolre, the head will contact with the roller 23 to cause the valve 22 to' be opened. As the valve 22 is' opened, gas

which has already been compressed, will enter the explosion. chamber 2l; The explosion will, obviously, force the adjacent piston head 9 of the rotor in the direction of the arrow, causing the rotor to be continued in'itsv revolution and the plunger heads to be directed outwardly in the cylinder l1. It is to b 'e understood that the pinion-30 makes three revolutions during leach r'evolution of the gear 29. The parts are so proportioned and their .operations so timed as to causethe plunger head 14 to :torce the valve 26 to its open position immediately aiter each piston 9 passes through the explosion chamber 24, the valve 22 being simuler'and forcing the valve 17 to v tan'eously opened as above explained to-ad- Y mit the charge to said chamber. This chargeof course, is compressed between the end of the plunger 1l and the end or" the piston 9, the spark being created through the medium of'a suitable timing device to explode the same. Before the next succeeding piston 9 moves into the explosion chamber 2l, thepllmger 14 will have been forced mitivardly in the plunger cylinder andthe valve Q6 returned to its normal position by the spring Q6, so that said valve will not' interfere with the movement of the pistons. From the foregoing it will-be seen that we have provided a simple, inexpensive and efficient means for carrying out the objects of the invention and while wcv have particularly described the elements best adapted to per-form the functions set forth, it is obvious that various changes in form, proportion and in the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the principles of thc invention. t

Having thus described this invention, what we claim is l. An engine of the class described including a casing provided with a passageway, a rotor operatively mounted therein,

65 outward stroke of the piston head, the gas a tubular extension formed on said casing substantially tangential' thereto and .eo-mmunicating therewith,l a hinged. member mounted at the junction of the extension andsaid casing adaptedto normali -form an obstruction in the passage-Way of the casing, said hinged member being designed to conform respectively to the outline of the casing and theextension to complete the formation thereof, one at a time, .at the junction of said extension and casing, means for'supplying an explosive mixture to said. extension, means nWithin said extension for compressing the mixture therein, and additional meansI for passing thev compressed mixture to the inner end of saidextensin at predetermined'times.

2. An engine .of the class described including a casing provided with a passageway, al rotor operatively mounted therein,

an extension formed' on the casing substanti'ally tangential 'to the periphery of the latter and communicating with theinterior thereof, the inner end of said extension at the point of communicationthereof Withithe casing being designed to form an explosion chamber, an oscillating Valve member mounted at the junction 'of the extension and casing and adapted to form an obstruction in the passage-Way of the latter and also designed to form a Wall of said explosion chamber, said valve member` being also ldesigned to conform respectively to the contour of the extension and casing atv-the j uncture thereof when saidvalve member is respectively disposedto the extremities of its movement, means to supply an explosive mixture to s'aid extension, means for `compressin the mixture in; said extension, and means cooperating with the last referred to mined times.

lVitneSses:

' nuages?,

` I' v Y means for admitting the' compressed militure to the explosion chamber at predeter;

- 3. An engine of the class'described comprising a tubular member yof annular design formed in sections secured one to thefother to lform a casing havinga passage-way, pis-z tons operatively mounted thexin, a tubularc'xtension formed on -one'of theI sections of `said annular -member, substantially tangential' thereto and communicating with the interior thereof, a valve member hinged at outer end of said extension, means for com-y pressing said mixture in the extension, and means for admitting'the compressed mixtureat predetermined times to the inner end ofthe extension at the junction thereof vvith the casing. l In testimony whereof We hereunto nirix our signatures in the 'presence .of two witnesses.

CHARLES n. i-HLDRirri-i.I CLIFTON C. DAUBENSPECK.

DAVID Znrrnn, 4 CECILE PRENDERGAST. 

